Apparatus for producing cold air for refrigerating purposes.



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APPLICATION FILED JLY 22, 1901.

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1:. A. com', Bxnou'rmx or '1'. com, Dnon. v APPARATUS POR PRODUCING COLDAIR POR REPRIGERATING PURPOSES.'

APPLIOATION Hum JULY 22 1901. N0 MODEL. o sums-SHEET 2.

110.761,448. PATBNTIID Mna.1.,19o4.

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Iz. A. ooLII, nxrzoU'InIx or I'. 001.12,V Dzzo'n. APPARATUS PORPRODUGING COLD A-IR FOR REFRIGERATING PURPOSES.

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No. 761,448. PATBNTBD MAY a1,- 1904. A T. A w. L. ooLB. g

E. COLE, BXEUUTBIX 0F T. OOLIB, DE'D.

APPARATUS FOR' PRODUGING GOLD AIR PoR RBFRIGERATING PURPOSES. f

APPLIQATION FILED JULY 22, 1901.

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No. 761,448. PATPNTED MAYia1, 19o4.

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LVA. COLE, EXEOUTBIX 0F T'. COLE, DEOD.

" APPARATUS P0P PRODUGING coLD AIR P0P RBPPIGERATING PURPOSES.

APPLICATION FILED JULY zz, 1901.`

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UNITED' STATESI Patented'may 31,1904.

PATENT OFFICE.

THOMAs -oOLE AND' WTLLIAM LAwEs COLE, OE LONDON, ENGLAND;

ELIZABETH ANN ooLE EXEOUTHIX OE sAID THoMAs ooLEDE oEAsED.

' APPARATUS FOR PROOCING COLD AIR FO'R REFRIGERATING PURPOSES.'

SPECIFICATION forming part of Letters Patent No. 761,448, aatednraysi',1904.

Appncanon inea July 22.1901.

T (1J/Z whom it may concern:

y Be it known that we, THOMAS COLE and WIL- LIAM LAwEs COLE, subgects ofthe King of 'Great Britain, residing at Park Road Iron Works, St. AnnlsRoad, Burdett Road, Bow,` London, England, have invented certain newand. useful Improvementsin Apparatus for Producing Cold Air forRefrigerating Pury poses, of which the following is a specificatlon.

The invention relates toj certain new and useful improvements inapparatus for pro-L duclng cold air for refrigerating purposes, landalms to provide an apparatusof this class which shall be comparativelysimple in its construction, strong, durable, efficient in its operation,and comparativelyinexpensive to set up; and to this end it consists ofthe novel combination and arrangement of parts `here- .inafter fullydescribed, illustrated in the accompanying drawings, and particularlypointed out in the claims hereunto appended.

In describing the invention in detail refer-y ence is had to theaccompanying drawings, forming apart of this specication, wherein likereference characters indicate correspond- Ying parts throughout thelseveral views, and

.1n Wlnch- Figure 1 is a part sectional elevation of a complete machine.Fig. v2 is a section through the line'l 1 of Fig. 1. Fig.3 is a plan ofa complete machine. Fig. 4 is a plan of the .casingwith the compressor,expansion-cylinder, and operating mechanism therefor re-' moved. Fig. 5is an end elevation of a committed at b. During the compression of theair in the cylinder a a spray of water is injected therein to mix withthe air and absorb the heat of compression. The means for supplying thespray of water to the compression- Serial No. 69,283. (N0 model.)

Vciates itself from the air by reason of its:

greater specific gravity and falls into theJ trapv f, arranged at thebottom of the compartment e. The water flows awayfrom the trap f ithrough thewaste-pipe g, and the air passes from the compartment-ethrough the opening ,l

L into the other compartment, a', of the coolingchamber.

or gauze plates or wire-work baskets lc, in which are arranged spheresor other obstructive media Z, acting as a cooling-surface.V The spheresl have water sprayed upon them from the pipe m, situated at the top ofthecompartment t'. rlhe vair in passing upl through i compartment t'comes in contact with the spray of water and assisted by this and hav-The latter is provided with a 4series of'shelves j, supporting a seriesof perforated ing to percolate in fine streamsbecomes cooled :A beforepassing from the compartment z through the opening n into themoisture-collecting chamber p, which is formed. between I theexpansion-cylinder Q and an auxiliarycasing r, substantially cup-shaped,whichforms awell: n cast integral wlth the casing r of the machine. Asvbefore stated, the auxiliary caslng r 1s The auxiliary casing r ispreferably forming a series of divisi'on-plates.'s s',v the 'Y "formerhaving'an opening t'andrthe latter having an opening t, these openingsarranged alternately at top and bottom, so that the air can travelcircuitously up and down `and around the expansion-cylinder q to depositall its moisture upon the walls of the well and the walls and webs orlins a of the expansion- IOO cylinder q before it enters the saidcylinder q by means of the Valve e to be expanded and further cooled.After the airis further cooled in the expansion-cylinder q it is thenexpelled `by the opening of the valve w and fed by the pipe to the coldroom or reservoir.

The fins of the auxiliary casing fr are constructed in such a mannerthat some of them extendfrom top to bottom, and the others extend fromthe top to a short distance from the bottom of the well. The wall 6uforms a chamber 6 for entry of air to the expansioncylinder, or in somecases the wall may be a continuation of the expansion-cylinder. The iinsof the Well a) correspond with eertainins or webs of theexpansion-cylinder (see Fig. 10) and form the partitions s beforereferred to, so that on the air entering the expansionchamber it willtravel up and down between the partitions alternately and around theexpansion-cylinder until it reaches the chamber 6 for admission into theexpansion-cylinder, the travel of the air being insured by the openingst and t' in the partitions. The partitions s extend from top to bottomof the well, so as to cause the air to travel around the cylinder in onedirection.

The water sprayed in the compression-cylinder is drawn from afloat-controlled supplytank y by the pump z, actuated by an eccentric 1on the main shaft 2, the water being drawn to one side of the piston onthe one stroke and forced into the compression-cylinder on the returnstroke through the pipe 3, the compression-cylinder being provided witha suitable sprayer, (not shown,) so'that the Water enters in spray form.The other end of the pump-piston is connected by the pipe 4 with a tank5, fromwhich the water is drawn and forced into the cooling-chamber e'by pipe m, so that as the pump-piston is actuated it alternatelyforceswater into the compressioncylinder a and cooling-compartment 1, theaction being in unison with the strokes of the piston of thecompression-cylinder. The water falling to the bottom of thecooling-compartment e' is discharged by the pressure of air in thecompartment z" into the tank y, and the water is of such a quantity thatthe tank y is always kept full, any overflow passing into thecompartment e and away by the wastepipe g. The water-trap in thecompartment e is preferably controlled by a float and valve, as inexisting machines; but any construction of trap may be employedf Thewall 6x1 of central recess or chamber 6 encircles the valve e and casingof the valve w of the expansion-cylinder and also connects the lastpartition-space with the valve Q), so that the air after having traveledaround the expansion-cylinder will enter the chamber 6 to pass throughthe valve u to the expansioncylinder.

10 is a pipe having a cock 11 for drawing on? the condensed moistureaccumulated between the wall 6L and the wall of the well, one of thepartitions s being provided with a small opening at the bottom, so thatthe pipe 10 can draw off the whole of the water in the chamber, theopening making no difference to the travel of the air.

10 denotes a pipe having a cock 11" for drawing the condensed moisturefrom the central recess 6.

The expansion-cylinder, in addition to being provided with webs, alsohas a iauge 12, so that it can rest upon the bead 13 of the auxiliarycasing fr and be secured thereto. The inlet-valve e and exhaust-valve 1nof the expansion-cylinder q are operated, through rocking levers 13 and14, by spring-controlled rods 15 and 16, actuated by cams 17 and 18 onthe main shaft 2.

In some cases the chamber 19, surrounding the well, may be in connectionwith the cold room by a pipe at the opening 2O and through to thecompression-cylinder by the opening 21, so that a complete circulationof the cold air takes place and greater ciiiciency is insured by reasonof the cold air from the cold room extending its influence to the wallsof the auxiliary casing 7 and so assisting in cooling the air as is ittraveling around the expansion-cylinder; but should this course not beadopted the moisture-collecting chamber p is properly lagged on theoutside with heatinsulating material.

In some eases the fins on the wall of the Well o may be dispensed with,in which case the air would travel about the fins u ofexpansion-cylinder q to deposit its moisture bcfore passing to theexpansion-cylinder q.

rlhe machine is constructed with a compression-cylinder a, adouble-compartment cooling-chamber,and an expansion-cylinder 9, thesebeing arranged in relation to each other as shown; but thecompression-cylinder and the expansion-cylinder can be arranged at adifferent angle to each other, but such that the pistons of both can beoperated from one crank-shaft. The casing r of the machine is so formedthat one portion is employed as the cooling-chamber and the other forcontaining the expansion-cylinder, the compression-cylinder beingmounted above the cooling-chamber.

Having thus fully described our invention, what we claim as new, anddesire to secure by Letters Patent, is-

1. In an apparatus for producing cold air, a cooling-chamber comprisingtwo compartments, means for cooling the air arranged in one of the saidcompartments, an air-compressor, means for establishing communicationbetween the said compressor and the other of said compartments, anexpansion-cylinder, outwardly-extending iins carried by the saidexpansion-cylinder, an auxiliary casing surrounding theexpansion-cylinder and forming a molsture-collectmg chamber, saidmolsture- IOO collecting chamber in communication with theJcompartment'of-the cooling-chamber provided with a cooling means, finscarried by the wall of the well and extending to the lins of thecylinder for forming partitions in the moisture-colleoting chamber,means for establishing comlmunication between the moisture-collectingchamber and the expansion-cylinder, and

means fordelivering cold air from the said expansion-cylinder.

2. In an apparatus for producing cold air, the combination with anair-compressor and means forabsorbing the heat of compression,

of an expansion-cylinder provided with outwardly-extendlng tins, anauxlhary casing surrounding the said cylinder and formlng amols-4ture-collecting chamber, fins carried by the wall of the well andextending toward the fins of the cylinder for forming partitions inthe oy moisture-collecting chamber, said partitions provided with suitableopenings, a wall arranged in the well and forming a chamber bev low theexpansion-cylinder, said chamber in communication with themoisture-collecting chamber, means for establishing communica nesses.

THOMAS COLE. WILLIAM LAWESy COLE. Witnesses:

WM. O. BROWN, HUGH HUGHES.

